Oil is priced in dollars: if you want to buy oil on the open market/from an OPEC nation, you have to pony up dollars to buy it. That says nothing about how many dollars are required ... e.g. look at what happened starting in the early '70s when Nixon closed the gold window. (I must say it's nice to be on a forum where I can reasonably expect people to know such references.)
As for your second paragraph in toto ... I'm not sure the linkages will work that way.
As for the Continental problem ... yeah, you could be right, I've certainly heard that was a factor, but the bottom line remains the same.